Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Chapter 21, Problem 21.35E
Interpretation Introduction
Interpretation:
The type of cubic crystal and the unit cell parameter is to be predicted.
Concept introduction:
A unit cell of the crystal is the three-dimensional arrangement of the atoms present in the crystal. The unit cell is the smallest and simplest unit of the crystal which on repetition forms an entire crystal. Unit cell can be a cubic unit cell or hexagonal unit cell. The classification of a unit cell depends on the lattice site occupied by the atoms.
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Draw the skeletal ("line") structure of 5-hydroxy-4-methyl-2-pentanone.
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structure.
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1. Using a Model set Build a model for the following compound
[CH2BrCI].
2. Build another model of the mirror image of your first molecule.
3. Place the two models next to each other and take a picture which shows the
differences between the two models.
4. Determine the absolute stereochemistry R or S for the two models.
5. Write or type a paragraph to Discuss the stereochemical relationship
between the two models of CH2BrCl. You must provide an explanation for
your conclusions also provide a description for the colors used to represent
each atom in the model's images.
What parameters are included in the specific rotation calculation of a pure substance
based on measurement from a polarimeter?
Select one or more:
Density of the sample
Pathlength of the sample container
Enantiomeric excess of the sample
Measured rotation of light
Chapter 21 Solutions
Physical Chemistry
Ch. 21 - Prob. 21.1ECh. 21 - Boron nitride, BN, is a very hard material, harder...Ch. 21 - Prob. 21.3ECh. 21 - Prob. 21.4ECh. 21 - Figure 21.35 shows a unit cell of diamond....Ch. 21 - Prob. 21.6ECh. 21 - How many different unit cells can a crystal have...Ch. 21 - Prob. 21.8ECh. 21 - Prob. 21.9ECh. 21 - Prob. 21.10E
Ch. 21 - Prob. 21.11ECh. 21 - Prob. 21.12ECh. 21 - Prob. 21.13ECh. 21 - Prob. 21.14ECh. 21 - Prob. 21.15ECh. 21 - Prob. 21.16ECh. 21 - Prob. 21.17ECh. 21 - Prob. 21.18ECh. 21 - Prob. 21.19ECh. 21 - Prob. 21.20ECh. 21 - Prob. 21.21ECh. 21 - Prob. 21.22ECh. 21 - Prob. 21.23ECh. 21 - Prob. 21.24ECh. 21 - Prob. 21.25ECh. 21 - Prob. 21.26ECh. 21 - Prob. 21.27ECh. 21 - Prob. 21.28ECh. 21 - For a simple cubic lattice, what is the ratio of...Ch. 21 - Prob. 21.30ECh. 21 - Prob. 21.31ECh. 21 - Consider Figure 21.21. If the lower rightmost...Ch. 21 - Prob. 21.33ECh. 21 - The aluminum-nickel alloy AlNi has a simple cubic...Ch. 21 - Prob. 21.35ECh. 21 - The first two signals from a powdered sample has X...Ch. 21 - Prob. 21.37ECh. 21 - Prob. 21.38ECh. 21 - Prob. 21.39ECh. 21 - Prob. 21.40ECh. 21 - Prob. 21.41ECh. 21 - Prob. 21.42ECh. 21 - Prob. 21.43ECh. 21 - Prob. 21.44ECh. 21 - Prob. 21.45ECh. 21 - What is the coordination number in the cesium...Ch. 21 - Prob. 21.47ECh. 21 - Which solid phase that is, which allotrope of...Ch. 21 - Prob. 21.49ECh. 21 - Prob. 21.50ECh. 21 - Write Born-Haber cycles showing the relationship...Ch. 21 - Prob. 21.52ECh. 21 - Prob. 21.53ECh. 21 - Prob. 21.54ECh. 21 - The lattice energy for potassium iodide, KI, is...Ch. 21 - Prob. 21.56ECh. 21 - Prob. 21.57ECh. 21 - Prob. 21.58ECh. 21 - Prob. 21.59ECh. 21 - Prob. 21.60ECh. 21 - Prob. 21.61ECh. 21 - Prob. 21.62ECh. 21 - Prob. 21.63ECh. 21 - Prob. 21.64E
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- V Determine whether the following molecule is a hemiacetal, acetal, or neither and select the appropriate box below. Also, highlight the hemiacetal or acetal carbon if there is one. Explanation O CH O Ohemiacetal Oacetal Oneither Check A 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Cer 000 Ararrow_forward1. Using Online resources and chemical structures hand draw four different organic compounds (not those already shown in your handout) that are chiral, optically active (a pair of enantiomers will count as one). Pay attention to correct stereochemistry 2. Write or type a short paragraph to Discuss the stereochemical relationship between the four compounds.arrow_forward1. Using a Model set Build a model for the following compound [CHBRIF] 2. Build another model of the mirror image of your first molecule. 3. Place the two models next to each other and take a picture which shows the differences between the two models. 4. Determine the absolute stereochemistry R or S for the two models. 5. Write or type a paragraph to Discuss the stereochemical relationship between the two models of CHBгCIF. You must provide an explanation for your conclusions also provide a description for the colors used to representarrow_forward
- The specific rotation of a sample depends upon measured angle of rotation, the density of the sample, and the pathway length of the light. True Falsearrow_forwardConsider the molecule A,B, C and D shown below, (1 x 4) Br NH2 A OH Br 边 H B C D 1. Assign the R/S configuration to each chiral center and identify by circling all the chiral centers. 2. Draw an image for the enantiomer of each of the compounds A, B, C and D.arrow_forwardCould you crystallize one enantiomer of mandelic acid from a racemic mixture (using the typical achiral solvents found in our lab) without preparing a diastereomeric salt? Why or why not? No, because both enantiomers have the same solubility in achiral solvents. than the other. ооо Yes, because one enantiomer has a higher melting point No, because both enantiomers are liquids. Yes, because one enantiomer is more crystalline than the other.arrow_forward
- If the literature value of specific rotation for a chiral compound is -53.6°, what is the enantiomeric excess of a compound with a measured specific rotation of -40.5°?arrow_forwardThe process to determine the configuration, starts by placing the lowest priority substituent toward the back. If the substituents pointing forward decrease in priority in a clockwise order, the configuration is S. If the substituents decrease in priority in a counterclockwise order, the configuration is R. True Falsearrow_forwardIn the drawing area below, create a hemiacetal with 1 hydroxyl group, 1 methoxy group, and a total of 3 carbon atoms. Click and drag to start drawing a structure. Explanation Check Х PO 18 Ar B © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibilityarrow_forward
- Predict the product of the reaction below (3 pts). hydrazine Ph H₂NNH2 KOH Write the mechanism for the above reaction using curved arrows to show electron movements. show all intermediates in the process (7 pts).arrow_forward↓ Feedback (8/10) Draw the major product of this reaction. Ignore inorganic byproducts. Incorrect, 2 attempts remaining N H3O+ 0 × Select to Draw + V Retryarrow_forward2. Calculate the branching ratio of the reaction of the methyl peroxy radical with either HO, NO 298K) (note: rate constant can be found in the tropospheric chemistry ppt CH,O,+NO-HCHO+HO, + NO, CH₂O+HO, CH₂00H +0₂ when the concentration of hydroperoxyl radical is DH01-1.5 x 10 molecules and the nitrogen oxide maxing ratio of 10 ppb when the concentration of hydroperoxyl radicalis [H0] +1.5x10 molecules cm" and the nitrogen oxide mixing ratio of 30 p Under which condition do you expect more formaldehyde to be produced and whyarrow_forward
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